Secret No 2 turns out to be testing

This is almost always missed. Check function and stress testing results. If the site doesn’t have the bandwidth or response time, Christmas could be a dismal time of year. You should be very interested in: Proof that the vendor is well versed in load, stress, volume and performance testing. At least, the site will respond and not act weird during peak purchasing times. Make sure all functions and links are valid. Example – If you take orders, make sure they have ways to track your inventory, returns, pricing and refunds – on time